Swivel harp fixture



NOV. 16, 1937. E, w, CARPENTER 2,099,000

SWIVEL HARP FIXTURE Filed Aug. 4, 1956 9 NVENTOR W ATTORNEYS.

Patented Nov. 16, 1937 UNITED STATES PATENT. OFFICE swrvnnnsnrrrxmn Edward W. Carpenter, Fairfleld, cm, assignor to The E. W. Carpenter Manufacturing Com- D y. Bridgeport, Conm, a co p ration of Connecticut Application August 4, 1936, serial No. 94,186 Claims. (or. 240-143) proved and inexpensive construction for frictionally securing a lamp shade mounting stud on a harp frame whereby the shade may be set at various angles as desired and held in any of its adjusted positions. 7

Other objects and advantages will become apparent from a consideration of the following detailed description taken in connection with the accompanying drawing wherein a satisfactory embodiment of the invention is shown. However, it is'to be understood that the invention is not limited to the details disclosed but includes all such variations and modifications as fall within the spirit of the invention and the scope of the appended claims. In the'drawing: I

' Fig. 1 is an elevational view of a lamp including the swivel harp structure of the present invention, the lamp shade being shown in section; Fig. 2 isan enlarged elevational view showing a part of the lamp harp frame and the mounting or the shade receiving stud thereon;

Fig. 3 is'a top plan view of the structure shown in Fig. 2;

Fig. *4 is an elevational view at right angles 00 Fig. 2;

- Fig. 5 is a perspective view showing a plate or swivel body employed;

. Fig. 6 is a'similar view showing a plate or friction spring employed: 1 Fig.'7 is an end view of a shade receiving stud;

and

Fig. 8 is a side elevational view of such stud. In Fig. 1 the harp fixture generally designated I0 isshown as mounted on a. lamp H including any or the usual socket l2 and an electric light bulb 13. The fixture in includes a harp frame It shown as f0 ed of round wire and bent substantially into a U-shape. This frame is used in inverted position and the lower ends of its arms are received in or secured to any or the usual bracket l5 used for mounting the harp fixture on the lamp. To the upper or connecting portion of the inverted U-shape frame it there is secured (in a manner later to be described) a stud .50 I6 shown in Fig. 1 as passing through a suitable opening. in a supporting frame Ila of a lamp shade IT. The outer end portion H of such stud is screw threaded receiving a nut l9 used to secure the lamp shade H in place.

55 The stud It is attached or secured to the frame substantially square.

II in such manner that the stud may be swiveled about the connecting portion of the frame so that the shade Il may be tilted into any desired position of adjustment. Stud l6 forms part of a shade support comprising a body plate 20 and 5 a spring plate 2|, the said platesforming simple and effective means whereby the stud is mounted on the harp frame for swivel movement relative thereto.

, Plate 26 has a preferably non-circular opening 10 22 therethrough and the stud ii at the inner side of the head 23 thereof is provided with an enlargement or shoulder 2| also preferably noncircular and of a shape similar to or corresponding with that of the opening 22. In the drawing 5 the opening and shoulder are shown as being The stud is passed through the opening 22 in plate 20 and the shoulder 24 is disposed in such opening. Obviously when the opening and shoulder are non-circular the stud 20 is held againstturning movement relative tothe plate.

Stud head 28 is provided with a transverse groove 25 in its inner side, and the stud is assembled on the plate 20 with itshead at the inner 25 side of the plate and with its' shank extending outwardly with respect to the plate. At each of itsends the plate 20 is provided withdownturned T-shaped extensions 26 each comprising a stem portion 21 and a head 28, thus providing notches 30 or recesses 3| in the opposite side edges of the extensions 26. Prior to the assembly of the plate on the harp frame (as will be'described) the extensions 26 incline outwardly as shown in Fig.

5, and also as shown by the dotted lines in Fig. 4. 35

The spring plate 2| has its intermediate portion offset to provide a groove 29 and its end portions are notched as at 30, such notches opening outwardly through the ends of the plate, thus forming spaced lugs 32. Notches 30 are of 40 a width to receive the stems 21 of the T-shaped extensions 26 on the ends of the plate 20, so that lugs 32 may enter recesses 3 l but are of substantially less width than the heads of such extensions. 46

when assembling the shade support on the harp frame the stud i8 is mounted on the plate 20 in the manner above described and then the plate is disposed at one side of the connecting portion of the frame with the head of the stud 50 against the frame. A portion of the frame seats in the groove 25 in the stud head 23. Next the spring plate 2| is disposed against the opposite side of the, frame from the first plate with the frame seating in the groove 29 of the spring plate. At this point the parts are in the positions suggested by the dotted lines in Fig. 4. Before being tensioned the portions of the spring plate at opposite sides of the groove 29 are inclining downwardly.

The end portions of the spring plate Zl are then forced upwardly and the T-shaped extensions v of the plate 20 are'bent inwardly so as to dispose the stem portions of said extensions in the notches in the ends of the spring plate. This locates the heads 28 of the extensions .26 at the undersides of the portions of the plate 2i at the sides of the notches "(That is, the lugs 32'are in the recesses 3| and are supported on the lower the head of the stud l8 against the frame.

, harp frame without the 7 means.

From the above it will be understood that the shade support frictionally engages the :frame so that the said support may swivel about the frame to dispose the shade in the desired position. The frictional engagement is such that the shade is automatically held in the .desired position of adjustment. Attention is directed to the fact that the entire support including the mounting stud comprises but three pieces and that such pieces are assembled and the support mounted on the use of separate fastening Having thus set forth the natur of my inven- 'tion, what I claim is:

. 1. In a swivelharp fixture for a lamp, a harp frame, and a shade support mounted to swivel on said frame comprising a plate, at one side of a '1 .portion of said frame, a shade securing stud carsaid spring plate to clamp the stud and this latter I ried by and extending through said plate and provided 'with a shoulder at the inner side of the plate, the inner end of the stud being provided with a transverse groove in which the frame is seated, a spring plate on the opposite side of the frame fromthe first plate, and means securing the spring plate to the first plate and .tensioning plate on opposite sides of the frame.

v2. A swivel harp fixture for a lamp comprising a harp frame comprising around wire bent to form a loop to embrace the lamp, and ashade support mounted to swivel on said frame at the bent end thereof comprising a supporting plate atone side of a portion of said wire, a separate wire by friction on the wire.

3. In a swivel harp fixture for a lamp, a harp frame, a shade support mounted to swivel on said frame and comprising a plate at one side of a portion of said frame, a shade securing stud extending from said plate, a spring plate on the opposite side of the frame from the first plate, T- shaped extensions on the ends of one of said plates, said other plate having notches opening through its ends intermediate its edges, andsaid extensions having their stems passing through said notches and their heads projecting beyond theedges of the notches with the spring plate tensioned whereby the ends are interlocked and the support clamped to the frame.

4. In a swivel harp fixture for a lamp, a harp frame, and a shade support mounted to swivel -on said frame and comprising a plate on one side of a portion of said frame, a stud extending through said plate and having a head at the frame side thereof and engaging the frame, a spring plate on the opposite side of the frame from the first plate and the stud, and extensions on the ends of one of said plates and interlocking with the ends of the other plate and securing the spring plate in tensioned condition holding the stud head against the frame portion and thereby clamping the support to the frame. p

5. In a swivel harp fixture for a lamp, a harp frame, and a shade support mounted to swivel on said frame and comprising a plate on one side of a portion of the frame, a stud extending through said plateand having ahead at the frame side thereof and engaging the frame, a

, the stud head against the frame portion and thereby clamping the support to the frame.

EDWARD W. CARPENTER. 

